18GHz Ku-Band Fiber Optic Mini Transmiter / Receiver

F-RFoF-18GHZ-TxRx
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Description Features Model Selection Specification Support
Description

18GHz Ku-Band fiber optic mini Transmitter and Receiver set.

The transmitter is able to accept RF signals from 10mhz to 18Ghz analog or digital  RF modulated signal and convert it to an optically modulated light; and the receiver converts the optical signal back to an electrical RF.

There are a lot of challenges to sending high-frequency RF over long-distance coaxial copper cable, the K-Band TX/RX allows you to send this signal over fiber from 0 to 40Km if needed.

Electrical to optical conversion is transparent, protocol or modulation independent, they work with analog or digital modulation standards.

Used for C-band, L-band, Ku-band, S-band Sattelite, cell phone 5G/4G/3G Mobile Communication, DAS or radar applications.

 

Applications:
5G/4G/3G Mobile Communication
Antenna remoting
Satellite communication
GPS signal transport
Pulse signal transport
Distributed antenna system
High-speed test and measurement
Video signal distribution in HFC and FTTx Nodes
Wideband wireless communication
OFDM fiber transmission
Radar over the fiber

Features

Receiver:

  • Small size: 22mm x 17mm x 8.9mm
  • High responsivity: typical 0.8 mA/mW @ 1310nm
  • Operating frequency up to 24GHz
  • Wide wavelength range from 800nm to 1650nm
  • DC-block and matched to 50 Ohm

 

Transmitter:

  • Low noise, butterfly optical device with TEC
  • ITU C Band
  • Wide operating frequency from 10MHz to 18GHz
  • APC & ATC functions
  • Flat frequency response
  • High dynamic range
  • Excellent EMI/EMC design
Model Selection

F-RFoF-18GHZ-Tx  18 GHz fiber optic Transmitter

F-RFoF-18GHZ-Rx  18 GHz fiber optic Receiver

Specification
Parameter Symbol  Condition    Min. Max. Unit
Operating Temperature Topr -40 -40 +70 °C
Storage Temperature Tstg   -40 +85 °C
Saturation Input Power Ps   -- 10 mW
Forward Current If   -- 10 mA
Reverse Bias Vr PD -- 20 V
DC Operating Voltage Vd +5V pin +4.7 +5.5 V
Dark Current Id   -- 10 nA
Relative Humidity Hr   -- 95 %
Pressure Pr   86 106 kPa
ESD   Human body model -- Class 1B  

Receiver Electrical and Optical Characteristics

Parameter Symbol Test Condition Min Typ. Max Unit
Wavelength Range λ   800 -- 1650 nm
Responsivity R 1310nm 0.7 0.8 -- mA/mW
1550nm 0.7 0.85 --
Frequency Bandwidth BW RCC 0.01 -- 6 GHz
RXC 0.01 -- 12
RUC 0.01 -- 18
RKC 0.01 -- 24
Ripple of Passband Flatness RCC,0.1GHz~6GHz -- +1 +1.2 dB
RXC,0.1GHz~12GHz -- +1.2 +1.5
RUC,0.1GHz~18GHz -- +1.5 +2
RKC,1GHz~24GHz -- +1.7 +2.5
RF Return Loss RL RCC,0.1GHz~6GHz -- -12 -9 dB
RCC,0.1GHz~6GHz -- -10 -7
RCC,0.1GHz~6GHz -- -10 -5
RKC 0.1GHz~18GHz -- -10 -5
RKC 18GHz~24GHz -- -5 -3
Back Reflection ORL PD -- -35 -- dB
Dark Current Id PD -- 5 10 nA
Operating Voltage Vd +5V Pin +4.8 +5 +5.2 V
Power Consumption Pdiss +5V power supply -- 25 50 mW

Receiver Fiber Specification

Parameter Typ. Unit
Fiber Type Single Mode  
Optical Connector Type FC/APC  
Pigtail Length 1 m
Minimum Bend Radius 30-2 mm

 Receiver PIN Function

PIN Name Direction Note
1 GND I GND
2 +5V I +5V DC Power
3 RF O RF Out, SMA Female,50Ω

 

Transmitter Absolute Maximum Ratings

 

Parameter Symbol Condition Min. Max. Unit
Operating Temperature Topr Case temperature -40 +70 °C
Storage Temperature Tstg   -40 +85 °C
DC Operating Voltage Vd -5V -5.5 -4.7 V
+5V +4.7 +5.5
RF Input Power Prf Continuous -- 20 dBm
Relative Humidity Hr   10 95 %
Atmospheric Pressure Pr   86 106 kPa
ESD   Human body model -- Class1A  

Transmitter Typical Specification (CWDM)

Parameter Test Condition Min. Typ. Max. Unit
Frequency Range TSC 0.01 ~ 3 GHz
TCC 0.01 ~ 6
TXC 0.01 ~ 12
TYC 0.01 ~ 16
TUC 0.01 ~ 18
Optical Wavelength λ0 is the standard CWDM wavelength Optional nm
Optical Wavelength Range Operating Temperature Range λ0-3 λ0 λ0+3 nm
Output Optical Power +25 -- 9 -- dBm
Gain (1) Operating Temperature Range -30 -26 -- dB
Gain Flatness TSC 100MHz ~ 3GHz -- +1.5 +2 dB
TCC 100MHz ~ 6GHz -- +1.5 +2.5
TXC 100MHz ~ 12GHz -- +2 +3
TYC 100MHz ~ 16GHz -- +2 +2.5
TUC 100MHz ~ 18GHz -- +2 +3
RF Return Loss TSC 100MHz ~ 3GHz -- -15 -10 dB
TCC 100MHz ~ 6GHz -- -10 -5
TXC 100MHz ~ 12GHz -- -10 -5
TYC 100MHz ~ 16GHz -- -12 -10
TUC 100MHz ~ 18GHz -- -10 -5
Input P-1dB 1GHz -- 18 -- dBm

 

Transmitter Data Sheet

Parameter Test Condition Min. Typ. Max. Unit
SFDR (1) TSC 1GHz 114 119 -- dB·Hz2/3
2GHz 112 116 --
3GHz 107 111 --
TCC 1GHz 110 118 --
3GHz 105 112 --
6GHz 101 106 --
TXC 1GHz 1270nm?1370nm 110 118 --
1530nm/1550nm 108 114 --
6GHz 1270nm?1370nm 102 110 --
1530nm/1550nm 102 108 --
12GHz 1270nm?1370nm 98 106 --
1530nm/1550nm 94 100  
TYC 1GHz 110 116 --
10GHz 105 112 --
16GHz 100 106 --
TUC 1GHz 108 114 --
10GHz 102 108 --
18GHz 97 103 --
IIP3 (1) TSC 1GHz 32 36 -- dBm
2GHz 30 33 --
3GHz 27 30 --
TCC 1GHz 27 34 --
2GHz 25 31 --
6GHz 22 26 --
TXC 1GHz 27 33 --
2GHz 24 30 --
12GHz 21 26 --
TYC 1GHz 28 32 --
10GHz 25 30 --
16GHz 22 26 --
TUC 1GHz 28 32 --
10GHz 25 30 --
18GHz 22 27 --
Noise Figure (1) TSC 1GHz -- 31 34 dB
2GHz -- 33 36
3GHz -- 37 40
TCC 1GHz -- 31 36
3GHz -- 36 41
6GHz -- 40 44
TXC 1GHz 1270nm/1370nm -- 31 36
1530nm/1550nm -- 35 39
6GHz 1270nm/1370nm -- 39 44
1530nm/1550nm -- 41 45
12GHz 1270nm/1370nm -- 41 47
1530nm/1550nm -- 49 53
TYC 1GHz -- 32 37
10GHz -- 36 41
16GHz -- 40 45
TUC 1GHz -- 34 39
10GHz -- 41 46
18GHz -- 46 50
Operating Current +5V -- 65 800 mA
-5V -- 70 100
Operating Voltage +5V +4.8 +5 +5.2 VDC
-5V -5.2 -5 -4.8

 

Transmitter Data Sheet

Parameter Test Condition Min. Typ. Max. Unit
Gain Flatness TSC 100MHz ~ 3GHz -- ±1.5 ±2 dB
TCC 100MHz ~ 6GHz -- ±1.5 ±2.5
TXC 100MHz ~ 12GHz -- ±2 ±3
RF Return Loss TSC 100MHz ~ 3GHz -- -13 -10  
TCC 100MHz ~ 6GHz -- -12 -10  
TXC 100MHz ~ 12GHz -- -10 -8  
Input P-1dB 1GHz -- 18 -- dBm
SFDR (2) TSC 1GHz 112 118 -- dB·Hz2/3
2GHz 110 115 --
3GHz 108 113 --
TCC 1GHz 112 118 --
3GHz 108 113 --
6GHz 102 107 --
TXC 1GHz 108 114 --
6GHz 101 106 --
12GHz 95 99 --
IIP3 (2) TSC 1GHz 33 38 -- dBm
2GHz 31 35 --
3GHz 29 33 --
TCC 1GHz 33 38 --
3GHz 29 33 --
6GHz 22 27 --
TXC 1GHz 28 33 --
6GHz 24 28 --
12GHz 20 23 --
Noise Figure (2) TSC 1GHz -- 35 38 dB
2GHz -- 36 39
3GHz -- 37 40
TCC 1GHz -- 35 38
3GHz -- 37 40
6GHz -- 40 43
TXC 1GHz -- 36 39
6GHz -- 43 46
12GHz -- 48 51

 

Parameter Test Condition Min. Typ. Max. Unit
Operating Current +5V -- 65 800 mA
-5V -- 70 100
Operating Voltage +5V +4.8 +5 +5.2 VDC
-5V -5.2 -5 -4.8

 

Transmitter Connector

Type Connector
RF TSC SMA, 50Ω, Female
TCC SMA, 50Ω, Female
TXC SMA, 50Ω, Female
TYC K Type (2.92mm, 50Ω), Female
TUC K Type (2.92mm, 50Ω), Female
Optical FC/APC (3)
Optical Fiber Type SMF-28 (Standard) (3)
Power

EMI Low Pass Filter, Feed Through Capacitor, Soldering Temperature Should not Exceed 300°C and 3s

 

PIN Function

PIN Name Direction Note
1 +5V I +5V DC Power
2 -5V I -5V DC Power
3 GND I GND
4 OP O

Optical Power Monitor, TTL Level, Low Level(<0.4V)is Optical Power. Low, High Level(+5V)is Optical Power Normal.

 

                       
                       

ITU C band Wavelength Code Number Table

xx Frequency
(THz)
Center Wavelength
(nm)
xx Frequency Center Wavelength
(nm)
17 191.7 1563.86 37 193.7 1547.72
18 191.8 1563.05 38 193.8 1546.92
19 191.9 1562.23 39 193.9 1546.12
20 192.0 1561.42 40 194.0 1545.32
21 192.1 1560.61 41 194.1 1544.53
22 192.2 1559.79 42 194.2 1543.73
23 192.3 1558.98 43 194.3 1542.94
24 192.4 1558.17 44 194.4 1542.14
25 192.5 1557.36 45 194.5 1541.35
26 192.6 1556.55 46 194.6 1540.56
27 192.7 1555.75 47 194.7 1539.77
28 192.8 1554.94 48 194.8 1538.98
29 192.9 1554.13 49 194.9 1538.19
30 193.0 1553.33 50 195.0 1537.40
31 193.1 1552.52 51 195.1 1536.61
32 193.2 1551.72 52 195.2 1535.82
33 193.3 1550.92 53 195.3 1535.04
34 193.4 1550.12 54 195.4 1534.25
35 193.5 1549.32 55 195.5 1533.47
36 193.6 1548.51 56 195.6 1532.68

 

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